A:  In the inner experience of man, mind is joined to matter. Such material-linked minds cannot survive mortal death. The technique of survival is embraced in those adjustments of the human will and those transformations in the mortal mind whereby such a God-conscious intellect gradually becomes spirit taught and eventually spirit led. This evolution of the human mind from matter association to spirit union results in the transmutation of the potentially spirit phases of the mortal mind into the morontia realities of the immortal soul. Mortal mind subservient to matter is destined to become increasingly material and consequently to suffer eventual personality extinction; mind yielded to spirit is destined to become increasingly spiritual and ultimately to achieve oneness with the surviving and guiding divine spirit and in this way to attain survival and eternity of personality existence. (1:3.7, Pg 26)

Riches have nothing directly to do with entrance into the kingdom of heaven , but the love of wealth does. The spiritual loyalties of the kingdom are incompatible with servility to materialistic mammon. Man may not share his supreme loyalty to a spiritual ideal with a material devotion. (163:2.10, Pg 1803)

“If any man would come after me, let him disregard himself, take up his responsibilities daily, and follow me. For whosoever would save his life selfishly, shall lose it, but whosoever loses his life for my sake and the gospel’s, shall save it. What does it profit a man to gain the whole world and lose his own soul? What would a man give in exchange for eternal life?

Jesus, The Urantia Book, (158:7.5, Pg 1760)

I am also including this story from Jesus, who is speaking about the narrow door to salvation. It is a story worth reading for all of us in these materialistic times::

“You also have another saying among you, and one that contains much truth: That the way which leads to eternal life is straight and narrow, that the door which leads thereto is likewise narrow so that, of those who seek salvation, few can find entrance through this door. You also have a teaching that the way which leads to destruction is broad, that the entrance thereto is wide, and that there are many who choose to go this way. And this proverb is not without its meaning. But I declare that salvation is first a matter of your personal choosing. Even if the door to the way of life is narrow, it is wide enough to admit all who sincerely seek to enter, for I am that door. And the Son will never refuse entrance to any child of the universe who, by faith, seeks to find the Father through the Son.”

But herein is the danger to all who would postpone their entrance into the kingdom while they continue to pursue the pleasures of immaturity and indulge the satisfactions of selfishness: Having refused to enter the kingdom as a spiritual experience, they may subsequently seek entrance thereto when the glory of the better way becomes revealed in the age to come. And when, therefore, those who spurned the kingdom when I came in the likeness of humanity seek to find an entrance when it is revealed in the likeness of divinity, then will I say to all such selfish ones: I know not whence you are. You had your chance to prepare for this heavenly citizenship, but you refused all such proffers of mercy; you rejected all invitations to come while the door was open. Now, to you who have refused salvation, the door is shut. This door is not open to those who would enter the kingdom for selfish glory. Salvation is not for those who are unwilling to pay the price of wholehearted dedication to doing my Father’s will. When in spirit and soul you have turned your backs upon the Father’s kingdom, it is useless in mind and body to stand before this door and knock, saying, `Lord, open to us; we would also be great in the kingdom.’ Then will I declare that you are not of my fold. I will not receive you to be among those who have fought the good fight of faith and won the reward of unselfish service in the kingdom on earth. And when you say, `Did we not eat and drink with you, and did you not teach in our streets?’ then shall I again declare that you are spiritual strangers; that we were not fellow servants in the Father’s ministry of mercy on earth; that I do not know you; and then shall the Judge of all the earth say to you: `Depart from us, all you who have taken delight in the works of iniquity.’

“But fear not; every one who sincerely desires to find eternal life by entrance into the kingdom of God shall certainly find such everlasting salvation. But you who refuse this salvation will some day see the prophets of the seed of Abraham sit down with the believers of the gentile nations in this glorified kingdom to partake of the bread of life and to refresh themselves with the water thereof. And they who shall thus take the kingdom in spiritual power and by the persistent assaults of living faith will come from the north and the south and from the east and the west. And, behold, many who are first will be last, and those who are last will many times be first.”

The Urantia Book, p1828:7 (166:3.3) ”

Thanks so much for this thoughtful question; I hope my reply has been helpful to you.